2. 外语
  3. What is the main idea of the passage? When sharks quickly move their tail, they probably become ______.

What is the main idea of the passage? When sharks quickly move their tail, they probably become ______.

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问题 What is the main idea of the passage?
When sharks quickly move their tail, they probably become ______.
选项 A、friendly
B、interested
C、indifferent
D、offensive
答案D
解析 本题问“当鲨鱼快速甩动尾巴的时候，它们有可能变得怎样”。文章第八段提到“When some sharks turn aggressive prior to an attack，they arch their back and throw back their head. They also move their tail more acutely．(一些鲨鱼在袭击猎物之前表现出攻击性时，会弓起背部，把头向后甩。它们还会剧烈地摇动自己的尾巴。)”也就是说，鲨鱼快速剧烈地摆动尾巴有可能说明鲨鱼变得有攻击性，[D]项offensive与aggressive同义，意为“有进攻性的、有攻击性的”。故[D]“有攻击性的”正确。其他选项[A]“友善的”、[B]“冷漠的”和[C]“感兴趣的”均不符合题意。
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大学英语四级

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